Adding more specs to DiaperBankClient (#285)

* Adding more specs to DiaperBankClient

* *Shakes fist at rubocop*

Author: edwinthinks

spec/services/diaper_bank_client_spec.rb

@@ -7,4 +7,62 @@
       expect(client).to be_an_instance_of Net::HTTP::Post
     end
   end
+
+  describe '.get_available_items(diaper_bank_id)' do
+    subject { described_class.get_available_items(diaper_bank_id) }
+    let(:diaper_bank_id) { Faker::Number.number }
+    let(:fake_routes) { instance_double('Routes.instances') }
+    let(:fake_route) { instance_double('route') }
+
+    before do
+      allow(described_class).to receive(:routes).and_return(fake_routes)
+      allow(fake_routes).to receive(:partner_requests).with(diaper_bank_id).and_return(fake_route)
+    end
+
+    context 'when the response code is 200' do
+      let(:fake_response) { instance_double('response', code: '200', body: { status: Faker::Number.number }.to_json) }
+      before do
+        allow(described_class).to receive(:diaper_get_request).with(fake_route).and_return(fake_response)
+      end
+
+      it 'should return the parsed response body' do
+        expect(subject).to eq(JSON.parse(fake_response.body))
+      end
+    end
+
+    context 'when the response code is not 200' do
+      let(:fake_response) { instance_double('response', code: '400') }
+
+      before do
+        allow(described_class).to receive(:diaper_get_request).with(fake_route).and_return(fake_response)
+      end
+
+      it 'should return a empty array' do
+        expect(subject).to eq([])
+      end
+    end
+  end
+
+  describe '.diaper_get_request(uri)' do
+    subject { described_class.diaper_get_request(uri) }
+    let(:uri) { 'fake-uri' }
+    let(:fake_request) { {} }
+    let(:fake_https_client) { instance_double(Net::HTTP) }
+    let(:fake_response) { { status: 'fake' } }
+
+    before do
+      fake_x_api_key = Faker::Number.number
+      allow(ENV).to receive(:[]).with('DIAPERBANK_KEY').and_return(fake_x_api_key)
+      allow(Net::HTTP::Get).to receive(:new).with(uri).and_return(fake_request)
+      allow(described_class).to receive(:https).with(uri).and_return(fake_https_client)
+      allow(fake_https_client).to receive(:request).with({
+                                                           "Content-Type" => "application/json",
+                                                           "X-Api-Key" => fake_x_api_key
+                                                         }).and_return(fake_response)
+    end
+
+    it 'should return the https response' do
+      expect(subject).to eq(fake_response)
+    end
+  end
 end